EFFECT OF LASER-SURFACE TREATMENT ON HIGH-CYCLE FATIGUE OF AISI 316L STAINLESS-STEEL

Authors
STAMM H HOLZWARTH U BOERMAN DJ MARQUES FD OLCHINI A ZAUSCH R
Citation
H. Stamm et al., EFFECT OF LASER-SURFACE TREATMENT ON HIGH-CYCLE FATIGUE OF AISI 316L STAINLESS-STEEL, Fatigue & fracture of engineering materials & structures, 19(8), 1996, pp. 985-995
Citations number
25
Categorie Soggetti
Material Science","Engineering, Mechanical
Journal title
Fatigue & fracture of engineering materials & structures → ACNP
ISSN journal
8756758X
Volume
19
Issue
8
Year of publication
1996
Pages
985 - 995
Database
ISI
SICI code
8756-758X(1996)19:8<985:EOLTOH>2.0.ZU;2-T
Abstract
The effect of a laser surface treatment on the high-cycle fatigue beha viour of the austenitic stainless steel AISI 316L was investigated. Th e specimens were subjected to a surface melting using a CO2-laser. Alt hough this treatment introduced tensile residual stresses in the melte d and resolidified surface layer and intensified the surface roughness , the fatigue limit could be increased by 20% with respect to the as-r eceived specimens. It is suggested that grain refinement in the rapidl y resolidified surface layer is mainly responsible for this improvemen t.